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Northwest Africa 1926
Basic information Name: Northwest Africa 1926
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1926
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 37 g
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  Ureilite-pmict
MetBase:  v. 7.1  (2006)  Ureilite-pmict
Recommended:  Ureilite-pmict    [explanation]

This is 1 of 29 approved meteorites classified as Ureilite-pmict.   [show all]
Search for other: Achondrites, Ureilites
Writeuphelp
Writeup from MB 88:

Northwest Africa 1926

Morocco

Found 2003

Achondrite (ureilite, polymict)

A 36.8 g partial stone was purchased in Rissani June 2003. Classification and mineralogy (J. Wittke and T. Bunch, NAU): fragmental breccia with clasts of a poikilitic ureilite embedded in typical ureilite material that consists of olivine with homogeneous cores (Fa31) and reduced rims (Fa2-7) and pyroxenes with Fs19.7Wo4.5 in cores and Fs9.5Wo1 at rims. Heavy concentration of carbonaceous matter; unoxidized metal, Ni = 2.95 wt %. Clasts are composed of large pyroxenes (Fs19.1Wo4.0) that poikilitically enclose homogeneous olivine (Fa21.8). Clast ureilite contains very little carbonaceous matter in contrast to the host ureilite. Shock level, S2; low degree of weathering. Specimens: type specimen, 6.3 g, NAU; main mass, MFarmer.

Data from:
  MB88
  Table 4
  Line 83:
Place of purchase:Rissani
Date:P Jun 2003
Mass (g):37
Pieces:1
Class:Ure pm
Classifier:T. Bunch and J. Wittke, NAU
Type spec mass (g):6.3
Type spec location:ASU
Main mass:MFarmer
Institutions
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Michael Cottingham   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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